(CNN) - Break out the menurkeys and sweet potato latkes, people, it's time to celebrate Thanksgivukkah, a once-in-a-lifetime holiday.

A calendrical quirk brings the first day of Hanukkah and Thanksgiving together this Thursday for the first time since 1888. Scientists say the confluence won't occur again for another 70,000 years, give or take a millennium.

Dana Gitell, a 37-year-old marketing manager for a Jewish nonprofit in Massachusetts, is the mind behind the mashup "Thanksgivukkah."

(If you think that's a mouthful, her other ideas were "Thanksgiving-ukkah" and "Hanukkahgiving," both of which caused our spellchecker to sputter and die.)

But with the right portmanteau in place, the Thanksgivukkah idea caught fire faster than a deep-fried turkey.

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